Downloading your FRITZ!Box certificate and importing it to your computer

Each FRITZ!Box has a unique, self-generated certificate for HTTPS Internet access to the user interface and FTPS access to storage (NAS) contents.

The FRITZ!Box certificate is not known to a certification authority or to the computer's local certificate administration. As a result, the web browser displays a certificate warning when you try to access the FRITZ!Box. The certificate warning only means that the browser cannot verify the authenticity and integrity of the FRITZ!Box. Even if the browser claims that the connection is insecure, opening the FRITZ!Box user interface does not pose a security risk!

You can avoid the certificate warning by downloading the unique certificate generated by the FRITZ!Box itself and importing it to the computer's certificate administration.

Note:The configuration procedure and notes on functions given in this guide refer to the latest FRITZ!OS for your FRITZ!Box.

1 Downloading the certificate

If you only use computers with macOS and use Safari or Google Chrome, then you do not need the certificate generated by the FRITZ!Box. If you are using Windows, Linux, or Mozilla Firefox, you must download the certificate file:

Linux

Import the FRITZ!Box's certificate to the certificate administration of your computer or browser, if the browser you are using has its own certificate store. The manufacturer of the Linux distribution or browser can provide you with information on importing certificates.

Mozilla Firefox

Firefox does not use the certificate administration from Windows, macOS, or Linux. Instead, it uses its own certificate store. Therefore, use Firefox's Certificate Manager to import the FRITZ!Box certificate:

Click the (open menu) button on the top right of Firefox.

Click "Options" and then "Advanced".

Click on the "Certificates" tab.

Click "View certificates".

The "Certificate Manager" window opens.

Click on the "Authorities" tab in the "Certificate Manager" window.

Click "Import..." and select the file with the FRITZ!Box certificate ("boxcert.cer").

Click "Open".

Enable the option "Trust this CA to identify web sites" and click "OK".